﻿/*
Copyright (c) 2011 <a href="http://www.gutgames.com">James Craig</a>

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.*/

#region Usings
using System;
using System.Collections;
using System.Reflection;
using System.Text;
using YABOV.Attributes.BaseClasses;
#endregion

namespace YABOV.Attributes
{
    /// <summary>
    /// Determines if an object is greater than the specified value
    /// </summary>
    public class GreaterThan : BaseAttribute
    {
        #region Constructor

        /// <summary>
        /// Constructor
        /// </summary>
        /// <param name="Value">Value</param>
        /// <param name="ErrorMessage">Error message</param>
        public GreaterThan(object Value, string ErrorMessage)
            : base(ErrorMessage)
        {
            this.Value = Value;
        }

        #endregion

        #region Properties

        public object Value { get; set; }

        #endregion

        #region Functions

        internal override string IsValid(PropertyInfo Property, object Object)
        {
            object Value = Property.GetValue(Object, null);
            if (Value != null)
            {
                if (Value is IEnumerable && !(Value is string))
                {
                    StringBuilder Builder = new StringBuilder();
                    IEnumerable TempList = (IEnumerable)Value;
                    foreach (object IndexedObject in TempList)
                    {
                        if (IndexedObject != null)
                        {
                            Builder.Append(ValidateObject(IndexedObject));
                        }
                    }
                    return Builder.ToString();
                }
                return ValidateObject(Value);
            }
            return "";
        }

        private string ValidateObject(object Value)
        {
            if (Value is DateTime && (DateTime)Value > DateTime.Parse((string)this.Value))
                return "";
            else if (Value is DateTime)
                return ErrorMessage;
            else if (double.Parse(Value.ToString()) > double.Parse(this.Value.ToString()))
                return "";
            return ErrorMessage;
        }

        #endregion
    }
}
